function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}


// Changes the height of the main column so that it matches the right column when 
// the right column is taller.
var fixHeight = function () {
	setTimeout(function () {
		var content = document.getElementById("content");
		var rightColumn = document.getElementById("right-column");
		var rightColHeight, contentHeight;
		
		if (rightColumn) {
			rightColHeight = document.getElementById("right-column").offsetHeight;
			contentHeight = content.offsetHeight;

			if (rightColHeight > contentHeight) {
				content.style.height = rightColHeight + "px";
			}
		}
	}, 100);
};

if (window.addEventListener) {
	window.addEventListener("load", fixHeight, false);
} else {
	window.attachEvent("onload", fixHeight);
}